/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:11:09,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:11:09,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:11:09,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:11:09,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:11:09,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:11:09,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:11:09,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:11:09,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:11:09,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:11:09,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:11:09,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-11-23 22:11:09,382 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-23 22:11:09,416 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:11:09,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:11:09,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:11:09,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:11:09,418 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:11:09,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:11:09,418 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:11:09,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:11:09,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:11:09,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:11:09,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:11:09,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:11:09,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:11:09,421 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:11:09,421 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:11:09,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:11:09,422 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:11:09,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:11:09,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:11:09,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:11:09,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:11:09,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:11:09,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:11:09,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:11:09,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:11:09,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:11:09,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:11:09,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:11:09,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:11:09,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:11:09,722 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:11:09,742 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:11:09,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:11:09,749 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:11:09,749 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:11:09,750 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2019-11-23 22:11:09,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2465fe588/25b71c6e84ff4c63a26c34af06c2e2a3/FLAGfe7304580 [2019-11-23 22:11:10,246 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:11:10,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested9.i [2019-11-23 22:11:10,253 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2465fe588/25b71c6e84ff4c63a26c34af06c2e2a3/FLAGfe7304580 [2019-11-23 22:11:10,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2465fe588/25b71c6e84ff4c63a26c34af06c2e2a3 [2019-11-23 22:11:10,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:11:10,615 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:11:10,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:11:10,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:11:10,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:11:10,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:10,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ceb8032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10, skipping insertion in model container [2019-11-23 22:11:10,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:10,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:11:10,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:11:10,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:11:10,905 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:11:10,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:11:10,948 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:11:10,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10 WrapperNode [2019-11-23 22:11:10,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:11:10,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:11:10,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:11:10,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:11:10,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:10,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:11,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:11:11,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:11:11,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:11:11,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:11:11,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:11,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:11,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:11,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:11,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:11,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:11,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:11,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:11:11,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:11:11,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:11:11,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:11:11,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:11:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:11:11,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:11:11,453 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:11:11,453 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-23 22:11:11,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:11:11 BoogieIcfgContainer [2019-11-23 22:11:11,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:11:11,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:11:11,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:11:11,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:11:11,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:11:10" (1/3) ... [2019-11-23 22:11:11,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539ec98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:11:11, skipping insertion in model container [2019-11-23 22:11:11,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (2/3) ... [2019-11-23 22:11:11,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539ec98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:11:11, skipping insertion in model container [2019-11-23 22:11:11,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:11:11" (3/3) ... [2019-11-23 22:11:11,463 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2019-11-23 22:11:11,474 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:11:11,484 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:11:11,495 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:11:11,522 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:11:11,522 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:11:11,523 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:11:11,523 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:11:11,523 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:11:11,523 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:11:11,523 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:11:11,524 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:11:11,537 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-23 22:11:11,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-23 22:11:11,543 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:11,544 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:11,545 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:11,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:11,551 INFO L82 PathProgramCache]: Analyzing trace with hash -331449283, now seen corresponding path program 1 times [2019-11-23 22:11:11,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:11,558 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518982464] [2019-11-23 22:11:11,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:11,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:11,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518982464] [2019-11-23 22:11:11,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:11:11,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-23 22:11:11,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700207411] [2019-11-23 22:11:11,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:11:11,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:11,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:11:11,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:11:11,823 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 6 states. [2019-11-23 22:11:12,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:12,181 INFO L93 Difference]: Finished difference Result 57 states and 88 transitions. [2019-11-23 22:11:12,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-23 22:11:12,183 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-23 22:11:12,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:12,195 INFO L225 Difference]: With dead ends: 57 [2019-11-23 22:11:12,196 INFO L226 Difference]: Without dead ends: 32 [2019-11-23 22:11:12,203 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:11:12,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-23 22:11:12,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2019-11-23 22:11:12,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-23 22:11:12,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-11-23 22:11:12,242 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 12 [2019-11-23 22:11:12,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:12,243 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-11-23 22:11:12,243 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:11:12,243 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-11-23 22:11:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-23 22:11:12,244 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:12,244 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:12,245 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:12,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:12,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1296087111, now seen corresponding path program 1 times [2019-11-23 22:11:12,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:12,246 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498191651] [2019-11-23 22:11:12,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:12,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:12,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498191651] [2019-11-23 22:11:12,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86994895] [2019-11-23 22:11:12,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:12,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-23 22:11:12,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:12,450 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:11:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:12,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:11:12,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 10 [2019-11-23 22:11:12,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703062218] [2019-11-23 22:11:12,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 22:11:12,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:12,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 22:11:12,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:11:12,485 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 7 states. [2019-11-23 22:11:12,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:12,643 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2019-11-23 22:11:12,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-23 22:11:12,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-11-23 22:11:12,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:12,647 INFO L225 Difference]: With dead ends: 40 [2019-11-23 22:11:12,647 INFO L226 Difference]: Without dead ends: 38 [2019-11-23 22:11:12,648 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2019-11-23 22:11:12,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-23 22:11:12,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 24. [2019-11-23 22:11:12,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-23 22:11:12,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2019-11-23 22:11:12,661 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2019-11-23 22:11:12,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:12,662 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2019-11-23 22:11:12,663 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 22:11:12,663 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2019-11-23 22:11:12,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-23 22:11:12,664 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:12,664 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:12,868 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:12,869 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:12,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:12,870 INFO L82 PathProgramCache]: Analyzing trace with hash 29741143, now seen corresponding path program 1 times [2019-11-23 22:11:12,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:12,872 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381549242] [2019-11-23 22:11:12,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:12,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:12,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381549242] [2019-11-23 22:11:12,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653601214] [2019-11-23 22:11:12,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:13,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-23 22:11:13,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:13,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:13,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2019-11-23 22:11:13,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310291398] [2019-11-23 22:11:13,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-23 22:11:13,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:13,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-23 22:11:13,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-11-23 22:11:13,135 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 13 states. [2019-11-23 22:11:13,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:13,838 INFO L93 Difference]: Finished difference Result 78 states and 104 transitions. [2019-11-23 22:11:13,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-23 22:11:13,840 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2019-11-23 22:11:13,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:13,841 INFO L225 Difference]: With dead ends: 78 [2019-11-23 22:11:13,842 INFO L226 Difference]: Without dead ends: 62 [2019-11-23 22:11:13,843 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=267, Invalid=855, Unknown=0, NotChecked=0, Total=1122 [2019-11-23 22:11:13,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-23 22:11:13,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 35. [2019-11-23 22:11:13,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-23 22:11:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2019-11-23 22:11:13,857 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 18 [2019-11-23 22:11:13,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:13,858 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2019-11-23 22:11:13,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-23 22:11:13,858 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2019-11-23 22:11:13,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-23 22:11:13,859 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:13,859 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:14,063 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:14,064 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:14,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:14,065 INFO L82 PathProgramCache]: Analyzing trace with hash 327524963, now seen corresponding path program 1 times [2019-11-23 22:11:14,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:14,066 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55351337] [2019-11-23 22:11:14,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:14,277 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:11:14,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55351337] [2019-11-23 22:11:14,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542464932] [2019-11-23 22:11:14,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:14,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-23 22:11:14,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-23 22:11:14,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:11:14,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 16 [2019-11-23 22:11:14,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366668674] [2019-11-23 22:11:14,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:11:14,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:14,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:11:14,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-11-23 22:11:14,383 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand 6 states. [2019-11-23 22:11:14,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:14,466 INFO L93 Difference]: Finished difference Result 61 states and 78 transitions. [2019-11-23 22:11:14,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:11:14,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2019-11-23 22:11:14,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:14,468 INFO L225 Difference]: With dead ends: 61 [2019-11-23 22:11:14,468 INFO L226 Difference]: Without dead ends: 40 [2019-11-23 22:11:14,469 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-11-23 22:11:14,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-23 22:11:14,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2019-11-23 22:11:14,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-23 22:11:14,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2019-11-23 22:11:14,479 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 27 [2019-11-23 22:11:14,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:14,479 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2019-11-23 22:11:14,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:11:14,480 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2019-11-23 22:11:14,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-23 22:11:14,481 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:14,481 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:14,686 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:14,686 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:14,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:14,688 INFO L82 PathProgramCache]: Analyzing trace with hash -116107245, now seen corresponding path program 2 times [2019-11-23 22:11:14,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:14,689 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512203579] [2019-11-23 22:11:14,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-23 22:11:14,812 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512203579] [2019-11-23 22:11:14,812 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168531018] [2019-11-23 22:11:14,813 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-23 22:11:14,853 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-23 22:11:14,854 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:14,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-23 22:11:14,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:14,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:11:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-23 22:11:14,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:14,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-11-23 22:11:14,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807405364] [2019-11-23 22:11:14,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-23 22:11:14,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:14,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-23 22:11:14,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-11-23 22:11:14,911 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 13 states. [2019-11-23 22:11:15,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:15,407 INFO L93 Difference]: Finished difference Result 77 states and 96 transitions. [2019-11-23 22:11:15,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-23 22:11:15,407 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2019-11-23 22:11:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:15,408 INFO L225 Difference]: With dead ends: 77 [2019-11-23 22:11:15,408 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:11:15,409 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=557, Unknown=0, NotChecked=0, Total=812 [2019-11-23 22:11:15,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:11:15,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:11:15,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:11:15,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:11:15,410 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2019-11-23 22:11:15,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:15,410 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:11:15,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-23 22:11:15,410 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:11:15,411 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:11:15,614 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:15,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:11:16,065 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2019-11-23 22:11:16,397 WARN L192 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2019-11-23 22:11:16,401 INFO L444 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-11-23 22:11:16,401 INFO L444 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-11-23 22:11:16,401 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-23 22:11:16,401 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:11:16,401 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:11:16,402 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-23 22:11:16,402 INFO L447 ceAbstractionStarter]: At program point L24(lines 11 26) the Hoare annotation is: true [2019-11-23 22:11:16,402 INFO L444 ceAbstractionStarter]: For program point L20-2(lines 20 23) no Hoare annotation was computed. [2019-11-23 22:11:16,403 INFO L440 ceAbstractionStarter]: At program point L20-3(lines 20 23) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0))) (or (and (<= 2 ULTIMATE.start_main_~i~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0) (and (<= ULTIMATE.start_main_~i~0 0) (<= 0 ULTIMATE.start_main_~i~0)) (and (<= 1 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 1) .cse0))) [2019-11-23 22:11:16,403 INFO L444 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2019-11-23 22:11:16,403 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-23 22:11:16,403 INFO L440 ceAbstractionStarter]: At program point L4-2(lines 1 26) the Hoare annotation is: (let ((.cse6 (* 3 ULTIMATE.start_main_~i~0))) (let ((.cse5 (* 2 ULTIMATE.start_main_~n~0)) (.cse4 (<= 2 ULTIMATE.start_main_~i~0)) (.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (< ULTIMATE.start_main_~j~0 .cse6)) (.cse2 (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0)) (.cse3 (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0))) (or (and (<= ULTIMATE.start_main_~k~0 (div ULTIMATE.start_main_~j~0 2)) .cse0 .cse1 (<= (div (- ULTIMATE.start_main_~j~0) (- 2)) ULTIMATE.start_main_~k~0) .cse2 .cse3) (and .cse4 .cse0 .cse1 (<= (+ (* 2 ULTIMATE.start_main_~j~0) 2) (+ .cse5 ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~k~0)) .cse2 .cse3) (and (<= (+ .cse6 5) (+ .cse5 ULTIMATE.start_main_~j~0)) .cse4 .cse0 .cse1 .cse2 .cse3)))) [2019-11-23 22:11:16,403 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:11:16,403 INFO L447 ceAbstractionStarter]: At program point L25(lines 11 26) the Hoare annotation is: true [2019-11-23 22:11:16,404 INFO L444 ceAbstractionStarter]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2019-11-23 22:11:16,404 INFO L440 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: (let ((.cse0 (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0)) (.cse1 (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0))) (or (and (<= ULTIMATE.start_main_~i~0 1) (< ULTIMATE.start_main_~j~0 (* 3 ULTIMATE.start_main_~i~0)) .cse0 .cse1) (and (<= 1 ULTIMATE.start_main_~i~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1) (and (<= ULTIMATE.start_main_~i~0 0) .cse1 (<= 0 ULTIMATE.start_main_~i~0)))) [2019-11-23 22:11:16,404 INFO L444 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-23 22:11:16,404 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-23 22:11:16,404 INFO L440 ceAbstractionStarter]: At program point L22-2(lines 22 23) the Hoare annotation is: (let ((.cse8 (* 3 ULTIMATE.start_main_~i~0)) (.cse9 (div (- ULTIMATE.start_main_~j~0) (- 2)))) (let ((.cse6 (* 2 ULTIMATE.start_main_~n~0)) (.cse3 (<= 2 ULTIMATE.start_main_~i~0)) (.cse5 (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~i~0)) (.cse1 (<= .cse9 ULTIMATE.start_main_~k~0)) (.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse0 (< ULTIMATE.start_main_~j~0 .cse8)) (.cse7 (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0)) (.cse2 (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0))) (or (and (<= ULTIMATE.start_main_~i~0 0) .cse0 .cse1 .cse2 (<= 0 ULTIMATE.start_main_~i~0)) (and .cse3 .cse4 .cse5 .cse0 (<= (+ (* 2 ULTIMATE.start_main_~j~0) 2) (+ .cse6 ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~k~0)) .cse7) (and (<= (+ .cse8 5) (+ .cse6 ULTIMATE.start_main_~j~0)) .cse3 .cse4 .cse0 .cse7 .cse2) (and .cse5 (<= ULTIMATE.start_main_~i~0 1) .cse0 .cse1 .cse7 .cse2) (and (<= (+ .cse9 1) ULTIMATE.start_main_~k~0) .cse4 .cse0 .cse7 .cse2)))) [2019-11-23 22:11:16,405 INFO L444 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-23 22:11:16,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:11:16 BoogieIcfgContainer [2019-11-23 22:11:16,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:11:16,426 INFO L168 Benchmark]: Toolchain (without parser) took 5811.21 ms. Allocated memory was 136.3 MB in the beginning and 247.5 MB in the end (delta: 111.1 MB). Free memory was 101.7 MB in the beginning and 121.9 MB in the end (delta: -20.2 MB). Peak memory consumption was 119.0 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:16,427 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 136.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-23 22:11:16,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.95 ms. Allocated memory is still 136.3 MB. Free memory was 101.5 MB in the beginning and 91.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:16,429 INFO L168 Benchmark]: Boogie Procedure Inliner took 192.51 ms. Allocated memory was 136.3 MB in the beginning and 205.5 MB in the end (delta: 69.2 MB). Free memory was 91.9 MB in the beginning and 184.3 MB in the end (delta: -92.4 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:16,429 INFO L168 Benchmark]: Boogie Preprocessor took 40.91 ms. Allocated memory is still 205.5 MB. Free memory was 184.3 MB in the beginning and 182.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:16,430 INFO L168 Benchmark]: RCFGBuilder took 271.59 ms. Allocated memory is still 205.5 MB. Free memory was 182.4 MB in the beginning and 170.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:16,431 INFO L168 Benchmark]: TraceAbstraction took 4968.14 ms. Allocated memory was 205.5 MB in the beginning and 247.5 MB in the end (delta: 41.9 MB). Free memory was 169.2 MB in the beginning and 121.9 MB in the end (delta: 47.4 MB). Peak memory consumption was 117.4 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:16,436 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 136.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 332.95 ms. Allocated memory is still 136.3 MB. Free memory was 101.5 MB in the beginning and 91.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 192.51 ms. Allocated memory was 136.3 MB in the beginning and 205.5 MB in the end (delta: 69.2 MB). Free memory was 91.9 MB in the beginning and 184.3 MB in the end (delta: -92.4 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.91 ms. Allocated memory is still 205.5 MB. Free memory was 184.3 MB in the beginning and 182.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 271.59 ms. Allocated memory is still 205.5 MB. Free memory was 182.4 MB in the beginning and 170.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4968.14 ms. Allocated memory was 205.5 MB in the beginning and 247.5 MB in the end (delta: 41.9 MB). Free memory was 169.2 MB in the beginning and 121.9 MB in the end (delta: 47.4 MB). Peak memory consumption was 117.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((2 <= i && 1 == cond) && i <= n) || (i <= 0 && 0 <= i)) || ((1 <= i && i <= 1) && i <= n) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: ((((((k <= j / 2 && 1 == cond) && j < 3 * i) && -j / -2 <= k) && 2 * i <= j) && i < n) || (((((2 <= i && 1 == cond) && j < 3 * i) && 2 * j + 2 <= 2 * n + i + k) && 2 * i <= j) && i < n)) || (((((3 * i + 5 <= 2 * n + j && 2 <= i) && 1 == cond) && j < 3 * i) && 2 * i <= j) && i < n) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((((i <= 1 && j < 3 * i) && 2 * i <= j) && i < n) || (((1 <= i && 1 == cond) && 2 * i <= j) && i < n)) || ((i <= 0 && i < n) && 0 <= i) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((((((i <= 0 && j < 3 * i) && -j / -2 <= k) && i < n) && 0 <= i) || (((((2 <= i && 1 == cond) && k <= i) && j < 3 * i) && 2 * j + 2 <= 2 * n + i + k) && 2 * i <= j)) || (((((3 * i + 5 <= 2 * n + j && 2 <= i) && 1 == cond) && j < 3 * i) && 2 * i <= j) && i < n)) || (((((k <= i && i <= 1) && j < 3 * i) && -j / -2 <= k) && 2 * i <= j) && i < n)) || ((((-j / -2 + 1 <= k && 1 == cond) && j < 3 * i) && 2 * i <= j) && i < n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 4.8s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, HoareTripleCheckerStatistics: 70 SDtfs, 231 SDslu, 222 SDs, 0 SdLazy, 553 SolverSat, 106 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 55 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 40 NumberOfFragments, 301 HoareAnnotationTreeSize, 6 FomulaSimplifications, 2529 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 589 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 198 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 189 ConstructedInterpolants, 0 QuantifiedInterpolants, 17178 SizeOfPredicates, 17 NumberOfNonLiveVariables, 208 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 76/134 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...